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Large Projects, Big Mistakes! See Cases Where Planning Failures Resulted in Millions in Losses and Caused Real Disasters.
Errors happen in any sector, but when they occur in large-scale projects, the impact can be disastrous. Companies and governments invest billions in innovation and infrastructure, but planning, communication, and execution failures can lead to irreparable losses.
Below, we present some of the most costly mistakes in history, ranging from calculation failures to logistical oversights.
The Submarine That Wouldn’t Float
Year: 2013
Location: Spain
Company: Navantia
Estimated Damage Cost: US$ 2 million
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In a flooded well, archaeologists found a 1,700-year-old Roman egg that still contains clear and yolk intact inside the very thin shell.
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Something is happening around the Earth: Inside the huge explosion of fireballs in 2026
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A hot air bubble coming from Argentina expands over Brazil, causing thermometers to exceed 38 degrees with a thermal sensation of 40 degrees in late March, affecting 6 states at once.
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The radish leaf that almost everyone throws away has more polyphenols, flavonoids, and fiber than the consumed root, and a 2025 study showed that the leaf contains compounds that protect the intestine, combat inflammation, and may inhibit the growth of cancer cells.
In 2013, the Spanish government invested over US$ 2.2 billion in the submarine Isaac Peral. However, a calculation error caused the vessel to be unable to float.
The problem was detected before manufacturing, but the loss had already been incurred. To correct the error, the submarine had to be redesigned, which resulted in another problem: the increased size prevented it from being accommodated in its original port, generating even more costs and embarrassment.
Trains Too Wide for the Stations
Year: 2014
Location: France
Company: SNCF and RFF
Estimated Damage Cost: US$ 68 million
The French railway company SNCF ordered 2,000 new trains but made a crucial mistake: the platform measurements were outdated.
As a result, the trains were too wide for the stations, forcing construction work on hundreds of platforms. The loss was estimated at nearly US$ 70 million.
Houses Built on an Abandoned Mine
Year: 2020
Location: South Dakota, USA
Company: Dakota Plaster Company
Estimated Damage Cost: US$ 10-15 million
In 2020, several residents of a housing development discovered that their homes were built over an old gypsum mine.
A dramatic incident occurred when a massive hole swallowed part of a house, forcing the evacuation of several families.
The Titanic and Its Tragic Fate
Year: 1912
Location: North Atlantic Ocean
Company: White Star Line
Estimated Damage Cost: US$ 7.5 million (equivalent to US$ 400 million today)
The Titanic was one of the most luxurious ships of its time, but its maiden voyage ended in tragedy when it collided with an iceberg.
The disaster, which claimed over 1,500 lives, could have been avoided if stricter safety measures had been implemented, such as an adequate number of lifeboats.
The Excavator Stuck on the Beach
Year: 2019
Location: Auckland, New Zealand
Company: Little Shoal Bay Boating Club
Estimated Damage Cost: US$ 50 thousand
An unusual incident occurred when a Land Rover got stuck in the sand of a beach in Auckland.
In an attempt to rescue it, an excavator was used, but it got stuck as well. The equipment was submerged for three days, generating considerable damage.
Flight 5390 of British Airways and the Ejected Pilot
Year: 1990
Location: Airspace over Oxfordshire, UK
Company: British Airways
Estimated Damage Cost: US$ 2.8 million
Flight 5390 of British Airways became a notorious case when a cockpit failure led to the partial ejection of pilot Tim Lancaster mid-flight.
The captain was saved thanks to the quick action of the crew, who managed to hold onto him until the emergency landing.
The US$ 135 Million Satellite Accidentally Destroyed
Year: 2003
Location: Sunnyvale, California
Company: Lockheed Martin Space Systems
Estimated Damage Cost: US$ 135 million
In one of the costliest mistakes in the aerospace industry, engineers at Lockheed Martin accidentally destroyed the NOAA-N Prime satellite during a handling procedure.
The issue occurred because 24 essential screws had not been installed, allowing the equipment to topple. The company took on part of the losses.
Errors can occur in any sector, but when they involve large projects and billion-dollar investments, their consequences are devastating. Many of the cases presented could have been avoided with better planning, communication, and oversight practices.
These events highlight the importance of strict protocols and accountability in managing large ventures.
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